Washington (CNN) - President Barack Obama spared few from his zingers at Saturday's White House Correspondents' Dinner - including himself.

He stepped to the podium as DJ Khaled's "All I Do Is Win" played as an introduction and told the audience, "Rush Limbaugh warned you about this - second term, baby."

His advisers were "a little worried about the new rap entrance music," and suggested that he kick off his speech with jokes at his own expense to "take himself down a peg." But, the president responded, "after 4½ years, how many pegs are there left?"

The White House announced this week that the 32-year-old artist is slated to perform there on April 9 as part of an evening of celebration for Memphis Soul music. (The Tennessee native's latest album in particular, "The 20/20 Experience," has stood out with critics for its more soulful sound.)

(CNN) - An early trailer for "The Dark Knight Rises" highlights a plot point that references a timely societal issue: a tension between the haves and the have-nots.

Anne Hathaway's Selina Kyle tells Christian Bale's Bruce Wayne in the clip, "You think this can last. There's a storm coming, Mr. Wayne. You and your friends better batten down the hatches. 'Cause when it hits, you're all going to wonder how you ever thought you could live so large, and leave so little for the rest of us."